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Castries vs Mexico City
Comparing Castries change · Mexico City change
Castries is the warmer of the two — about 10°C on the annual average; Castries is the wetter, with 1261 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Mexico City, in everyday terms.
Summers
Summers are nearly the same
Castries: Warm
Mexico City: Warm
Winters
Castries has far milder winters
Castries: Stays warm
Mexico City: Cool
Rain & snow
Castries is much wetter
Castries: Very wet
Mexico City: Moderate rainfall
Sky
Castries is sunnier
Castries: Fairly sunny
Mexico City: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 10°C on the annual average.
Precipitation
Castries is the wetter — about 1261 mm more across the year.
Clear skies
Castries has the clearer skies — the higher line.
Exact monthly numbers
Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.
Avg high (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Mexico City | 22 | 24 | 26 | 28 | 28 | 26 | 25 | 25 | 24 | 24 | 23 | 22 |
| Difference | -5 | -2 | — | +1 | — | -2 | -3 | -3 | -4 | -5 | -5 | -5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Mexico City | 22 | 24 | 26 | 28 | 28 | 26 |
| Difference | -5 | -2 | — | +1 | — | -2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Mexico City | 25 | 25 | 24 | 24 | 23 | 22 |
| Difference | -3 | -3 | -4 | -5 | -5 | -5 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Mexico City | 6 | 8 | 10 | 12 | 12 | 13 | 12 | 12 | 12 | 11 | 9 | 7 |
| Difference | -19 | -17 | -16 | -14 | -14 | -15 | -15 | -15 | -15 | -17 | -19 | -19 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Mexico City | 6 | 8 | 10 | 12 | 12 | 13 |
| Difference | -19 | -17 | -16 | -14 | -14 | -15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Mexico City | 12 | 12 | 12 | 11 | 9 | 7 |
| Difference | -15 | -15 | -15 | -17 | -19 | -19 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Mexico City | 7 | 6 | 11 | 19 | 48 | 120 | 140 | 144 | 129 | 60 | 14 | 2 |
| Difference | -106 | -70 | -55 | -71 | -66 | -13 | -76 | -147 | -95 | -186 | -229 | -148 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Mexico City | 7 | 6 | 11 | 19 | 48 | 120 |
| Difference | -106 | -70 | -55 | -71 | -66 | -13 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Mexico City | 140 | 144 | 129 | 60 | 14 | 2 |
| Difference | -76 | -147 | -95 | -186 | -229 | -148 |
Cloud cover (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Mexico City | 39 | 35 | 36 | 46 | 55 | 71 | 75 | 74 | 76 | 59 | 42 | 37 |
| Difference | — | -4 | -5 | -3 | +3 | +12 | +25 | +28 | +25 | +7 | -4 | -4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Mexico City | 39 | 35 | 36 | 46 | 55 | 71 |
| Difference | — | -4 | -5 | -3 | +3 | +12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Mexico City | 75 | 74 | 76 | 59 | 42 | 37 |
| Difference | +25 | +28 | +25 | +7 | -4 | -4 |
Relative humidity (%) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Mexico City | 61 | 55 | 50 | 48 | 55 | 69 | 76 | 79 | 82 | 78 | 72 | 65 |
| Difference | -14 | -19 | -25 | -28 | -22 | -9 | -2 | — | +3 | -1 | -7 | -12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Mexico City | 61 | 55 | 50 | 48 | 55 | 69 |
| Difference | -14 | -19 | -25 | -28 | -22 | -9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Mexico City | 76 | 79 | 82 | 78 | 72 | 65 |
| Difference | -2 | — | +3 | -1 | -7 | -12 |
How both climates are changing
Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Castries trends → · Mexico City trends →
Methodology & sources
Castries
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 10 years of daily observations at LE Lamentin, a weather station, about 66 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
Mexico City
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Playa Caleta 454 Colonia Marte, about 5 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
← change Castries · change Mexico City → · Castries page · Mexico City page